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Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. 5. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. C. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. e. All of the above. f. None of the above.

Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. 5. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. C. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. e. All of the above. f. None of the above.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Propose an appropriate intermediate for the following reaction

Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. b. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. c. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. e. All of the above. f. None of the above.
Transcribed Image Text:Using absorbance at 234 nm, 280 nm, and 260 nm, you calculated the percent of proteins present in your DNA. The percent of proteins present when calculated using absorbance at 260 nm and 280 nm was much larger than the percent of proteins present calculated using absorbance at 260 nm and 234 nm. This indicated that: a. Peptides present in your DNA preparation contain a large number of amino acids, tyrosine, phenylalanine, and tryptophan. b. Peptides present in your DNA preparation contain a small number of amino acids tyrosine, phenylalanine, and tryptophan. c. Peptides present in your DNA preparation do not contain amino acids tyrosine, phenylalanine, and tryptophan. d. Your DNA preparation is not contaminated with proteins. e. All of the above. f. None of the above.
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UV-visible absorption spectroscopy for proteins and DNA

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